EP1678512B1 - Procede et dispositif de mesure de niveaux de parasitage avec asservissement de frequence - Google Patents

Procede et dispositif de mesure de niveaux de parasitage avec asservissement de frequence Download PDF

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Publication number
EP1678512B1
EP1678512B1 EP04790261A EP04790261A EP1678512B1 EP 1678512 B1 EP1678512 B1 EP 1678512B1 EP 04790261 A EP04790261 A EP 04790261A EP 04790261 A EP04790261 A EP 04790261A EP 1678512 B1 EP1678512 B1 EP 1678512B1
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EP
European Patent Office
Prior art keywords
measuring
measurement
radio
frequency
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04790261A
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German (de)
English (en)
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EP1678512A1 (fr
Inventor
Matthias Keller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohde and Schwarz GmbH and Co KG
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Rohde and Schwarz GmbH and Co KG
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Publication of EP1678512A1 publication Critical patent/EP1678512A1/fr
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
    • G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values

Definitions

  • the invention relates to a method and a device for measuring radio interferences.
  • EMC electromagnetic compatibility
  • the respective strengths of the two devices can be bundled in one system.
  • DE 38 17 500 C1 such a system is shown, in which through a spectrum analyzer function of the desired frequency range tuned and compared at each measurement frequency of the measured voltage level with a limit and when exceeded of the limit value is characterized by the measured voltage level belonging to the measuring frequency voltage level as a radio interference voltage.
  • a radio interference voltage is identified in this way, it switches from the spectrum analyzer function to the measurement receiver function.
  • the radio interference voltage is sampled several times with regard to its voltage level at the respective measuring frequency and, with regard to the selected statistical evaluation function, more precisely characterized with respect to its time behavior.
  • No. 6,509,742 B discloses a method for measuring radio interference levels in a specific frequency range by means of a pre-measurement and a post-measurement in which the center frequency is tracked to the average frequency of the radio interference level determined in the preceding pre-measurement.
  • the invention is therefore based on the object of further developing a method and a device for measuring radio interference levels such that radio interference levels identified in the pre-measurement and variable in their frequency are correctly recorded and evaluated in the subsequent measurement following the pre-measurement.
  • the object of the invention is achieved by a method and a device for measuring radio interferences having the features of claim 1 and claim 5, respectively.
  • the inventive method or apparatus for measuring radio interference voltages can also correctly identify changes in the voltage level of the radio interference voltage, and correctly take into account in the frequency tracking of the measurement receiver. In this way, a correct, detection and evaluation of frequency and amplitude variable radio interference voltages by the inventive method or by the inventive device for measuring radio interference voltages is possible.
  • a plurality of selectable evaluation functions are preferably integrated in the measurement receiver, with which a more precise analysis of the time response of the radio interference voltage over the evaluation time of the spectrum analyzer is possible in the final measurement.
  • the inventive method or the inventive device for measuring radio interference voltages is not only designed for a single radio interference, but allows the simultaneous identification of multiple radio interference voltages using the spectrum analyzer as part of a pre-measurement and the subsequent evaluation of all identified radio interference voltages using the test receiver in the final measurement.
  • radio interference voltage and measuring voltage in the sense of radio interference level and measurement level were used universally. Not only the voltage in the narrower sense is meant as a measured variable, but also other measured variables such as field strength, currents, etc., which characterize the measuring signal.
  • the term voltage, measuring voltage, radio interference voltage, etc. can therefore be arbitrarily replaced by level, measurement level or radio interference level.
  • any useful and / or interference signal is received via an antenna 1 of the device according to the invention for measuring radio interference voltages, which is positioned at a certain selectable measuring location.
  • the device according to the invention for measuring radio interference voltages is positioned at a measuring location no useful signals occur, is received by the antenna 1 in undisturbed operation only a noise signal.
  • a radio interference occurs, it is received by a high-frequency part 2 via the antenna 1.
  • first mixer 3 is a conversion to the intermediate frequency.
  • a frequency-tunable first local oscillator 4 over the entire measuring frequency range of the device according to the invention is preferably tuned in a certain adjustable frequency grid.
  • the frequency spectrum of the received high-frequency radio interference voltage, together with the superimposed high-frequency noise voltage is converted into an intermediate frequency range with this first local oscillator 4 tuned in within a given frequency raster within the predetermined measurement frequency range.
  • the intermediate frequency signal has different signal processing functions (e.g., filtering, linearization, etc.).
  • the conversion of the intermediate frequency signal into the baseband is performed in the subsequent second mixer 6.
  • the carrier frequency for conversion into the baseband is generated by a second local oscillator 7 with a fixed frequency.
  • the analog measuring voltage is transformed into the digital data format.
  • the amount formation of the digitized time-varying measuring voltage is carried out in the absolute value generator 10.
  • a logarithmation of the digitized time-varying measuring voltage for a semilogarithmic representation of the measurement result takes place in the logarithm 11.
  • the access to the signal is illustrated by the symbolic switch 12.
  • the switch 12 receives from a higher-level controller 17 a control signal which determines the time of access.
  • the digitized voltage level of the measurement voltage is detected during access in a detector 13.
  • the detected with the detector 13 digitized voltage level of the measuring voltage is read by the microcomputer 14.
  • the measurement voltage consisting of the radio interference voltage and the superimposed noise voltage is measured over the entire adjustable measurement frequency range in the adjustable frequency grid.
  • the frequency of the first oscillator 4 over the adjustable measuring frequency range in the adjustable frequency grid with respect to the recording of the frequency spectrum of the measuring voltage is successively tuned by the parent frequency and Abtastberichtech 17 of the microcomputer.
  • the synchronous to the speed of Frequenz wrestletician access to the digital measurement voltage over the first measurement time is also carried out by the parent frequency and Abtastberichtmaschine.
  • spectrum analyzer 15 is also the comparison of the measured voltage per frequency measurement level in relation to an adjustable limit and the Identification of the measured voltage level as a radio interference voltage in the event of the limit value being exceeded by the measured voltage level.
  • the voltage levels of the measurement signal including the identified radio interference voltage levels detected at the individual measurement frequencies within the measurement frequency range are buffered in the memory 18.
  • a built-in microcomputer 14 higher-level sequence control which is not shown in Fig. 1, after the measurement of the frequency spectrum of the measuring voltage in the entire measuring frequency range through the Function unit spectrum analyzer 15 the operation switched to the functional unit measuring receiver 16.
  • a measuring frequency range of the functional unit measuring receiver 16 which is generally smaller than the adjustable measuring frequency range of the functional unit spectrum analyzer 15, takes place in the functional unit measuring receiver 16, a more accurate analysis of the time behavior of the individual, identified radio interference voltages over several access times within a second measurement time.
  • the measurement and evaluation results of the functional unit measuring receiver 16 are also buffered in the memory 18.
  • the inventive method for measuring radio interference voltages whose method steps are shown in the flow chart in Fig. 2, in the beginning Vorunk performed by the functional unit spectrum analyzer 15, in the first method step S10 initialization of the measuring frequency of the device according to the invention shown in FIG. 1 z. B. with the user selected lower limit frequency of the measuring frequency range to be measured.
  • the voltage level of the measurement voltage consisting of the radio interference voltage and superimposed noise voltage is detected within a first measurement time at the selected measurement frequency.
  • the respective measured voltage level is compared in method step S20 with a user-selected limit value.
  • the limit value is usually a value which is constant over the entire measuring frequency range and which is laid over the entire measuring frequency range in the sense of a marker. In principle, however, is the use of one over the entire Measuring frequency range variable limit value possible.
  • the measuring voltage at this measuring frequency is characterized as a radio interference voltage and the set measuring frequency is determined as the center frequency for a subsequent remeasurement. If the limit value is exceeded by the measuring voltage over a certain frequency range in the case of a broadband radio interference voltage, then the respective mean frequency is determined by the functional unit spectrum analyzer 15 and set as the center frequency.
  • step S20 All voltages measured in step S20 to the individual measurement frequencies are stored with their associated voltage levels and frequencies, and in the event of a limit exceedance with their center frequency and with the identification as radio interference in step S30.
  • the measuring frequency is increased by one Frequenzrasterinkrement and carried out with the new measuring frequency in step S20, a new level measurement.
  • a continuous (swept) measurement it is also possible to carry out a continuous (swept) measurement.
  • the pre-measurement in the functional unit spectrum analyzer 15 is ended. The method now goes into the mode of measurement, which is performed by the functional unit measuring receiver 16.
  • a second measurement time that exceeds a certain settable number of access times, which is significantly longer than the first measurement time of the functional unit spectrum analyzer 15, is a measurement of the Voltage level of the measuring voltage.
  • the measuring frequency range of the functional unit measuring receiver 16 is selected such that the center frequency determined by the functional unit spectrum analyzer 15 for each marked radio interference voltage is used as the center frequency of the respective measuring frequency range for the final measurement.
  • the center frequency of the post-measurement is thus tracked to the identified in the pre-measurement center frequency of the identified radio interference voltage, whereby a dynamic measurement of a frequency-variable radio interference voltage is possible.
  • the voltage level function values determined by the respectively selected evaluation functions are stored as the results of a more accurate time analysis of the radio interference voltage for all measuring frequencies within the measuring frequency range of the functional unit measuring receiver 16 belonging to the respective radio interference voltage.
  • a more precise measurement of the time response is carried out in method step S60 for the next radio interference voltage not yet measured in the final measurement, in which the center frequency of the time response Measuring frequency range of the functional unit measuring receiver 16 is set to the determined by the functional unit spectrum analyzer 15 center frequency to be measured in the following radio interference voltage and a repeated sampling of the voltage level of the radio interference voltage to be measured in the set measuring frequency range of the functional unit measuring receiver 16 is performed.
  • the method according to the invention for measuring radio interference voltages from the superordinate sequence control system again becomes the pre-measurement by the functional unit spectrum analyzer 15, if the user does not intend to terminate the EMC measurement.
  • the measuring frequency of the spectrum analyzer is corresponding in step S10 set the lower limit frequency of the measuring frequency range to be measured.
  • Fig. 3 is an example measurement result of a measurement of the radio interference voltage, as presented on a display device 19 is shown.
  • the voltage level values and frequency values for an identified center frequency of approximately 99.4 MHz for an identified radio interference voltage when using the quasi-peak and the average function are used as Rating shown.
  • the frequency spectrum of the radio interference voltage including the adjacent noise voltage in the measuring frequency range of the functional unit spectrum analyzers 15 is shown with the determined center frequency of the radio interference voltage as the center frequency of the measuring frequency range used.
  • the results of the pre- and post-measurement can be displayed for the other identified radio interference voltages.
  • the spectral course of the evaluation function, in the example quasi-peak and average could also be represented.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Claims (6)

  1. Procédé de mesure de niveaux de parasitage de liaisons hertziennes dans une plage de fréquences déterminée, dans lequel la plage de fréquence est déterminée lors d'une mesure préliminaire, un niveau de mesure du signal à mesurer est respectivement détecté pour chaque fréquence de mesure et est comparé avec une valeur limite, et en cas de dépassement de la valeur limite par le niveau de mesure, le niveau mesuré à la fréquence de mesure respective est identifié comme niveau de parasitage de liaisons hertziennes et dans lequel lors d'une mesure ultérieure chaque niveau de parasitage de liaisons hertziennes identifié fait l'objet d'une mesure plus précise respectivement en ce qui concerne son comportement dans le temps, caractérisé en ce que, pour la détection d'une dérive de fréquence pour chaque niveau de parasitage de liaisons hertziennes identifié, la fréquence centrale de la plage de fréquences de mesure de la mesure ultérieure, laquelle se répète de manière cyclique en alternance avec la mesure préliminaire, est repositionnée par rapport à la fréquence moyenne déterminée à nouveau au cours de la mesure préliminaire précédente du niveau de parasitage de liaisons hertziennes variable.
  2. Procédé de mesure de niveaux de parasitage de liaisons hertziennes selon la revendication 1, caractérisé en ce que, lors de chaque mesure préliminaire qui se répète de manière cyclique en alternance avec la mesure ultérieure, on exécute la détermination du niveau de mesure de chaque niveau de parasitage de liaisons hertziennes dont la fréquence et/ou le niveau de mesure change par rapport à la mesure préliminaire précédente.
  3. Procédé de mesure de niveaux de parasitage de liaisons hertziennes selon la revendication 1 ou 2, caractérisé en ce que, lors de la mesure préliminaire, la plage de fréquence est réglée en continu et successivement dans une trame de fréquences déterminée.
  4. Procédé de mesure de niveaux de parasitage de liaisons hertziennes selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le niveau de mesure du niveau de parasitage de liaisons hertziennes respectif est mesuré en répétant plusieurs fois lors d'un deuxième temps de mesure de la mesure ultérieure par rapport à un premier temps de mesure de la mesure préliminaire.
  5. Procédé de mesure de niveaux de parasitage de liaisons hertziennes selon la revendication 4, caractérisé en ce qu'à partir des niveaux de mesure qui font l'objet d'une exploration multiple lors de la mesure ultérieure, un niveau qui est évalué d'après un procédé d'évaluation réglable parmi plusieurs est déterminé pour chaque niveau de parasitage de liaisons hertziennes identifié.
  6. Dispositif de mesure de niveaux de parasitage de liaisons hertziennes selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif comprend une unité fonctionnelle formée par un analyseur de spectre (15) servant dans le cadre d'une mesure préliminaire à l'identification des niveaux de parasitage de liaisons hertziennes et à la détermination de la fréquence moyenne des niveaux de parasitage de liaisons hertziennes identifiés, une unité fonctionnelle formée par un récepteur de mesure (16) servant à réaliser une exploration multiple des niveaux de mesure des niveaux de parasitage de liaisons hertziennes identifiés par l'unité fonctionnelle formée par l'analyseur de spectre (15) et à réaliser dans le cadre d'une mesure ultérieure une évaluation statistique des niveaux de mesure explorés et un microcalculateur qui est configuré pour commander le dispositif de façon à ce que toutes les caractéristiques du procédé de la revendication 1 soient mises en oeuvre.
EP04790261A 2003-10-27 2004-10-11 Procede et dispositif de mesure de niveaux de parasitage avec asservissement de frequence Expired - Lifetime EP1678512B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10350063A DE10350063A1 (de) 2003-10-27 2003-10-27 Verfahren und Vorrichtung zur Messung von Funkstörpegeln mit Frequenznachführung
PCT/EP2004/011352 WO2005047910A1 (fr) 2003-10-27 2004-10-11 Procede et dispositif de mesure de niveaux de parasitage avec asservissement de frequence

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Publication Number Publication Date
EP1678512A1 EP1678512A1 (fr) 2006-07-12
EP1678512B1 true EP1678512B1 (fr) 2007-01-10

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US (1) US7801489B2 (fr)
EP (1) EP1678512B1 (fr)
JP (1) JP5189767B2 (fr)
DE (2) DE10350063A1 (fr)
WO (1) WO2005047910A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040015272A (ko) 2001-06-12 2004-02-18 리서치 인 모션 리미티드 인증서 관리 및 전송 시스템 및 방법
DE102005010882A1 (de) * 2005-03-09 2006-09-14 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Vorrichtung zur Identifizierung von Funkstörpegeln asynchron zur Messung des Frequenzspektrums
JP2007198965A (ja) * 2006-01-27 2007-08-09 Sony Corp 妨害電磁波測定システム、妨害電磁波測定方法およびその方法をコンピュータに実行させるためのプログラム
DE102007054678B3 (de) * 2007-11-14 2009-04-02 Wago Verwaltungsgesellschaft Mbh Verfahren zur Erkennung von Störquellen für Automatisierungseinrichtungen und Störquellenerkennungseinheit hierzu
US20090291643A1 (en) * 2008-05-22 2009-11-26 Ralink Technology Corporation Method and system for measuring noise signal
WO2010019141A1 (fr) 2008-08-13 2010-02-18 James Messina Répulsif pour animaux à large spectre et procédé associé
WO2010064438A1 (fr) * 2008-12-04 2010-06-10 日本電信電話株式会社 Appareil de station de commande, appareil de station émettrice, procédé de communication et système de communication
US20100197257A1 (en) * 2009-02-04 2010-08-05 Qualcomm Incorporated Adjustable receive filter responsive to frequency spectrum information
CN102590686B (zh) * 2012-03-08 2015-10-28 中国南方电网有限责任公司超高压输电公司检修试验中心 一种双极直流输电线路无线电干扰确定方法
US10158431B2 (en) * 2017-04-25 2018-12-18 Bae Systems Information And Electronic Systems Integration Inc. Dynamic relay assignment for jamming mitigation in wireless networks
US10237885B2 (en) 2017-05-01 2019-03-19 Bae Systems Information And Electronic Systems Integration Inc. Multiple access wireless network with low latency subnet
CN107480319B (zh) * 2017-06-21 2021-09-28 中国电力科学研究院 一种高压直流输电分裂导线的优化布置方法及系统
JP7251557B2 (ja) * 2019-01-21 2023-04-04 日本電気株式会社 無線通信品質可視化システム、無線通信品質可視化装置、および測定装置
US11323352B2 (en) * 2019-01-30 2022-05-03 Rohde & Schwarz Gmbh & Co. Kg Test system and test method
CN111562467B (zh) * 2020-03-24 2022-11-25 中国电力科学研究院有限公司 一种基于地面合成电场测量数据的起晕判定方法及系统

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2804867A1 (de) * 1978-02-04 1979-08-09 Deutsche Bundespost Schaltungsanordnung zur messung von stoerimpulsen, die infolge von bitfehlern in einem digitalen nachrichtenuebertragungssystem am analogausgang auftreten
DE3027364C2 (de) * 1980-07-18 1983-01-20 Rohde & Schwarz GmbH & Co KG, 8000 München Schaltungsanordnung für einen Funkstörmessempfänger zur Bewertung von Eingangsimpulsen
JPS6216683Y2 (fr) * 1981-03-20 1987-04-27
JPS59157574A (ja) * 1983-02-27 1984-09-06 Anritsu Corp スペクトラムアナライザ
JPS62229085A (ja) * 1986-03-31 1987-10-07 Toshiba Corp 周波数アジリテイレ−ダ
JP2520614B2 (ja) * 1986-11-17 1996-07-31 アンリツ株式会社 スペクトラムアナライザ
DE3817000A1 (de) * 1988-05-19 1989-11-23 Basf Ag Kraftstoffe fuer ottomotoren
DE3817499C1 (en) * 1988-05-21 1989-09-28 Rohde & Schwarz Gmbh & Co Kg, 8000 Muenchen, De Method for the measurement of broadcast interference
DE3817500C1 (fr) * 1988-05-21 1989-10-05 Rohde & Schwarz Gmbh & Co Kg, 8000 Muenchen, De
US4859933A (en) 1988-06-24 1989-08-22 Hewlett-Packard Company Narrowband signal recognition for EMI measurement
JPH0769365B2 (ja) 1989-01-10 1995-07-31 アンリツ株式会社 スペクトラムアナライザ
JP2942569B2 (ja) * 1989-02-28 1999-08-30 アンリツ株式会社 Ｅｍｉ測定装置
US5119076A (en) * 1989-12-26 1992-06-02 Tektronix, Inc. Measuring spectral features using a cursor and a marker
JPH0481671A (ja) * 1990-07-24 1992-03-16 Yokogawa Electric Corp Ｅｍｉ測定方法
JP2594282Y2 (ja) * 1992-02-03 1999-04-26 株式会社アドバンテスト スペクトラム・アナライザ
JP3138314B2 (ja) * 1992-03-16 2001-02-26 株式会社アドバンテスト 非同期校正回路及び周波数検出回路
DE4239741A1 (de) * 1992-11-26 1994-06-01 Rohde & Schwarz Verfahren zum Messen der Funkstörfeldstärke von elektrischen Geräten
DE4420448C1 (de) * 1994-06-10 1995-09-14 Fraunhofer Ges Forschung Verfahren und Vorrichtung zur Messung der Feldstärke in einem Funkkanal und dessen Nachbarkanälen mittels Zero-IF
CA2162347C (fr) * 1995-11-07 2001-01-09 Gary Gunthorpe Methode et appareil de balayage a haute vitesse de niveaux d'emission electromagnetique
JP2001244901A (ja) * 2000-02-29 2001-09-07 Advantest Corp 電波利用の調査方法及び装置
JP3740942B2 (ja) * 2000-04-18 2006-02-01 富士ゼロックス株式会社 電磁波ノイズ測定装置、方法、及び記録媒体
US7454222B2 (en) * 2000-11-22 2008-11-18 Dragonwave, Inc. Apparatus and method for controlling wireless communication signals
JP3666648B2 (ja) * 2001-01-11 2005-06-29 日本電気株式会社 クロック周波数変調回路及び該変調回路を搭載した電子機器
JP2002344397A (ja) * 2001-05-21 2002-11-29 Ntt Docomo Inc 妨害波探索システムおよび妨害波探索方法
US6700388B1 (en) * 2002-02-19 2004-03-02 Itt Manufacturing Enterprises, Inc. Methods and apparatus for detecting electromagnetic interference
JP3800222B2 (ja) * 2004-02-19 2006-07-26 日本電気株式会社 送信電力制御のための目標値制御システム及びその方法並びに基地局及び携帯通信端末
WO2008012954A1 (fr) * 2006-07-27 2008-01-31 Panasonic Corporation Appareil de communication sans fil, système lan sans fil, procédé de détection d'interférence, et procédé d'évitement d'interférence
US7813701B2 (en) * 2006-08-29 2010-10-12 Piping Hot Networks Limited Interference optimized OFDM

Also Published As

Publication number Publication date
JP2007509333A (ja) 2007-04-12
EP1678512A1 (fr) 2006-07-12
DE10350063A1 (de) 2005-05-25
JP5189767B2 (ja) 2013-04-24
DE502004002649D1 (de) 2007-02-22
WO2005047910A1 (fr) 2005-05-26
US20080274702A1 (en) 2008-11-06
US7801489B2 (en) 2010-09-21

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